Valve-grinder



D. A. RUNNION.

VALVE GRINDER. APPLICATION FILED FEB. a, 19m.

Patented Apr. 13, 1920.

FIG L T eZZ m it may cone 1271 Be it known that i, D5,;

two parts the o pares 1s 1 l e a'h y smelt. 8, on the ht s other suitable can easily be desirable The driven shaft projecting end potio This blade 1s LSGCl hle Ell 0t in tlie v; lve but any other device may be secured to "rig to the use to "iven shaft slotted longi- J '1 rerehiv llOllOW. 'i orined 1S operslot ed in the slots 20,

other roller en a e pm 2%: 1s

grasped by the i he tool and press s revolved. eonates the driven left is oscillated angle of 90 for ffEGiiliLilOlff to move irection and then in direction (he driven shaft 1s ierermittenel end there is a pause each stroke or travel. When the commences to move, it starts 7 V I increases in speed L or "5s travel, then diminishes i the end of its travel, and then 1 similar manner in the reverse his peculiar motion is of great value in a valve to its seat. Abrasive mm zeriel such as emery, is sprinkled on the the valve is oscillated in contact material until it acquires and the device may be used for any other purpose to which the oscillating motion produced by it is applicable.

lVhat I claim is:

1. In a valve grinder, a support, a driving shaft journaled therein, a driven shaft mounted to oscillate in the support and arranged at an angle to the driving shaft, a drum secured to the driven shaft and having two longitudinal l earing slots, arranged one at each side of it, a crank-pin secured to the driving shaft and arranged obliquely of the driven shaft and separate rollers on the crank-pin for engaging with the respective slots of the drum.

2. In a valve grinder, a support, a driving shaft journaled therein, a driven shaft mounted to oscillate in the support and arranged at an angle to the driving shaft, an adjustable thrust spindle bearing axially on one end of the driven shaft, a crank-pin secured to the driving shaft and arranged obliquely of the driven shaft and a slotted drum secured to the driven shaft and en gaged by the said crank-pin.

3. In a valve grinder, a casing, a driving shaft j ournaled in the casing a driven shaft mounted to oscillate in the casing and arranged at an angle to the driving shaft a screwthreaded spindle. engaging with the casing and bearing pivotally on one end of the slotted drum in line with its axis and provided with an operating knob or handle and a crank secured on the driving shaft and provided with a crank-pin arranged ol liquely of the driven shaft and operatively engaging with the said slotted drum.

4:. In a valve grinder, a casing formed of separable parts, one of the said parts having two shaft bearings formed integrally with it and arranged at an angle to each other, a driving shaft journaled in one bearing, a driving shaft mounted to oscillate in the other bearing, a slotted drum secured on the driven shaft inside the 021s ing, and a crank secured on the driving shaft inside the casing and provided with a crank-pin arranged obliquely of the driven shaft and operativeiy engaging with the said slotted drum.

In testimony whereof I have aflixed my signature.

DAVID A. RUNNION. 

